handovers in heterogeneous networks. In DC, a foreground User Equipment (UE) with
multiple transceivers has a possibility to connect to a Macro eNodeB (MeNB) and a Small
cell eNodeB (SeNB) simultaneously. In downlink split bearer architecture of DC, a data radio
bearer at MeNB gets divided into two; one part is forwarded to the SeNB through a non-ideal
backhaul link to the UE, and the other part is forwarded by the MeNB. This may lead to an …